Sea dragon and Big Dumb Booster.

>>>>On combustion instability... Beale Aerospace claimed that using
hydrogen peroxide as an oxidiser basically eliminated the combustion
instability problem. Before they went out of business, they had hot-fired
an 800,000 pound thrust 2nd stage engine, and planned to build a 3-million
pound thrust first stage engine. Their theory was to use singular rather
than clustered engines to reduce complexity, and H2O2 allowed them to do
that, apparently

I'm certainly no rocket scientist. Can anyone give me a basic outline of
the causes of combustion instability? Is this something that we can iron
out of designs with dampening devices and computer modelling?

The Sea Dragon BDB, designed in the early 60's anticipated the use of a
single, huge pressure-fed first stage engine, producing 36 million Kgf of
thrust. Since the design was never built and tested, are we to assume that
the designers of the early 1960's were ignorant of POGO effects?
http://www.friends-partners.org/mwade/lvs/searagon.htm

Tony

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